<h2>1.内部测试异常数据或特殊场景</h2>
<p></p>
<h2>2.示例</h2>

<div tiScroll style="height: 150px; overflow: auto; border: 1px solid rosybrown">
  <h4>外层有tiScroll</h4>
  <ti-cascader [searchable]="true" [items]="data" [(ngModel)]="mySelected"></ti-cascader>
  <br />
  <span> 选中项： {{ mySelected | json }} </span>
  <br /><button (click)="mySelected=undefined">清除选中项</button> <br /><button (click)="mySelected=[]">设定选中值为空数组</button>
  <br /><br /><br /><br />
  <ti-cascader [items]="data" [(ngModel)]="mySelected1" [clearable]="true"></ti-cascader>
  <br />
  <span> 选中项： {{mySelected1 | json}} </span>
  <br /><br /><br /><br /><br /><br /><br /><br />
</div>
